Bearing cap remover



Aus. 15, 195o w. A. sfURM 2,519,204

` BEARING CAP REMOVER Filed April 16. 1945 z r f 7 7 WALTER ASTI/RM, L .l INVENTOR.

Patented ug. 19S() `aen-9,204 `opname cAPREMovER `waiter A. sturm, Les Angeles, Calif. Applieanoa April is, 1945, ser'iai No. 588,664 i i I r .'Ihis invention relates .to a fpulling fdevieefor removing bearing caps. I

.At .present there is 4ln'eed for an :improved tool to removemlain bearing capsand `caps for con- `necting rods, atherezbeing at .present `no tool on. -f

`the marketior-.this purpose that .does not .possess certain disadvantages for 'which this invention provides a remedy. .For example, .an ordinary hammer 'may kbe us'ed 'to .strike I-blows against the part to :be removed in the `direction 'toward which `this.invention applies traction theretdbnt such a toollis 'far less eiect'ive es it does not apply the tractive force axially Jof .the connecting rod from the .cap i's `to v.be removed. The caps are not removable by hand and, due to their snug t they must, Vin some way, be hammered of. 'A't the present time there is no `tool on 'the market adapted eiciently to grip opposite sides of the connecting rodeap -`so that it may beremoved bytraction directed axially of. the connecting rod proper. When this operation is .performed by my newly invented device, there is'no b'inding'between theiholtsand the cap, because this tool "withdraws Vthe 'cap inthe axial manner'st'ated 1 Une ftheobjet's'of the present invention is ...to overcome the 'defects 'above'.p'ointed out, this being accomplished by supplying the tradition in Lian axiai'direction:

`Othe`r`bjt:ts, advantages 'and features of iin- 'ventio'n will hereinafter appear.

Referring t'o 'the' accompanying drawing,"`which illustrates what is at present deemed to be a preferred embodiment `of the invention,

Fig. 1 is `a side elevationvof the deviceillustrating the application thereof to a connecting rod cap, dotted lines showing the position of the swingable jaw or arm when in a slightly released position, and showing also the position at such time of the yoke and lever whereby said jaw is forced inwardly to the full line, gripping position.

Figs. 2, 3, 4, 5, 6 and 7 are, respectively, cross sections taken on the correspondingly numbered cross section indicating `lines on Fig. 1, the arrows associated with each section-indicating line denoting the View point of the observer in each instance.

Y and I2 are shown bowed away from each other -1 claim (ici. .2i- 250) `in `order better Lto adapt them to embrace between 'them :thepiee of work is. tope operated upon.v A .bent spring It, located hetweenthe inner end portionsof said farms tendsfte swing outwardly the rarm -or jaw spring is shown attached at one endto arm iii by a-'screw l '1., the :opposite end of said-spring abutting f'against and KVunder a lug 'it projecting'irom "the inner side oi" the arm I2. Each of the arms Ii'a'nd i2 `carries -a ratchet toothed gripping lshoe i9, the teeth 2i) of these-shoes being `directed toward -tl'ielpieee oi'work MFInE'ig. 2 one of the shoes ,i9 `is shown ffurnifshed with a central mounting rib i9@ tted snugly in a Agroove lprovided Territ in 'me rounded v@mi portion we of the arm H, it beingunderstood tha-tooth shoes and rounded :arm ends are alike.

The 4arms -Ii and I2 `may vbe termed elongated gripping jaws, and in forderto enable them to `per-form their *gripping function properly the device -is provided lwith a vjaw"open"atin'5.,f means -which is shown as vconsisting of a 'bar or yoke `j2I with Awhich cooperates an 'operating lever "22 arrangedto apply tractionfto it, said leveribeing itii'crun'iedV 'to arm Ifi 'by means 'of 1a pivot pin 23.

well shown in Fig. 6 sai-d yoke 2l 'has a sonriewhattapered end portion through which extends an` inclosed 'slot 25, vsaid slot'being or a sufiieient size to'receiveadiustably the arm i2, said arm i2 having along its 'outer edge a spaced apart series of recesses 26 individually engageablefby the shoulder 25a at the outer end of the slot 25..

11n "order to facilitate application of. yoke 2l to the arm l2, the s'lot25 in said yoke is first made openatits outer end, and after said .yoke hasbeen applied 'to v'said arm an insert piece 25D is welded in place to close the outer end portion of the slot, as shown in Fig. 6. This method of assembling is necessary when the arm I2 has the reinforcing enlargement |911.

From Fig. 3 it is seen that the yoke 2l is channel shaped as viewed in cross section with the open side of the channel directed downwardly. The aforesaid insert piece 25h is so shaped as to provide a shoulder Zta suciently narrow to nt readily into the notches 26.

At the opposite end of the yoke 2l a long, lon gitudinal slot 2l is provided, open at its outer end, this latter slot being adapted to receive loosely the stationary jaw arm II. Underlying said slot 2 the channel shaped yoke has each of its downwardly directed side portions or flanges furnished with a series of notches 30 with resulting intervenise teeth 3 I, which resemble ratliet teeth be 3 cause they have sharp corner portions that are directed toward the opposite end of the yoke.

The operating lever 22 as to its length is of an arcuate shape and is channel shaped in cross section with the open side of its channel directed toward and partly embracing the jaw-forming arm to which the lever is pivoted. The short arm of the lever 22 at the side of its pivot opposite to its handle portion, has iixed to it an operating pin 32 with projecting end portions positioned to cooperate with the two rows of yoke teeth 3| so that the lever may .be used to coact with the yoke 2| to draw the swingable jaw arm l2 toward the stationary arm Il to apply the device to the piece of work as shown in full lines in Fig. 1. It is to be understood that the portion of yoke-2| which is furnished with the slot 21 is, owing to its aforementioned channel shape, provided with a downwardly opening groove which is suiliciently wide to admit loosely between its side portions the short arm of the operating lever 22, but the slot 21 is shown less in width than lthe width of the underlying portion of said lever.

The reversely positioned arrangement of the channel-shaped members 2| and 22 is well illustrated in Figs. 3 and 5, these views also showing how the projecting end portions of the pin 32 cooperate with the toothed edge portions of the yoke 2|.

The pivot hole through which passes the pivot 23 of lever 22, is located in a rounded boss 23h that projects from the outer side of the stationary jaw forming arm The channel formation of the pivoted portion of lever 22 is suiciently deep to allow the handle portion of said lever to swing inwardly a sufficient distance to cause the operating pin, while in engagement with the selected yoke teeth 3|, to swing to a past dead center position in relation to a produced line passing through the outer (tapered) end of the yoke and its pivot pin 23, so that the yoke will maintain itself in locked position, leaving the hands of the workman free to operate the conventional, slidable impact weight or hammer 35,

the impact of which against the rod head 36 is relied upon to cause the applied tool to withdraw the connecting rod cap I4 from the connecting rod to which it is assumed to be attached.

The teeth 20 of the shoes I9 are shown shaped as ratchet teeth and so inclined as tobite into the piece of work I4 when sudden traction is applied thereto by the impact of said hammer. It is to be understood that the cap-retaining nuts will be completely removed from their bolts before the cap-removing operation is started.

Slight deviations from axial traction maybe compensated for by substituting thicker or thinner gripping shoes for the shoes I9 shown in the drawing.

It Will be noted that by obtusely deecting part of the traction rod I0 to form the branch of the bifurcation a rigid, stable mounting means is provided for the swingable arm I2 of the bifurcation, for the latter arm is pivoted to the device at the juncture of said arm with the rod or shank I0, said shank forming a serviceable mounting means for the hammer 35.

It should -be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modiiications and equivalents which fall within the scope of the subject matter claimed.

What is claimed is:

In a device for detaching bearing caps, a pair of complementary arms pivotally connected at one end and having :bearing gripping jaws at their opposite ends, one of said arms having a multiplicity of longitudinally spaced notches, a yoke mem-ber disposed transversely of said arms and slidably adjustable longitudinally thereof, said yoke 4being engageable with the respective notches of said notched armV and having a plurality oi notches spaced longitudinally thereof, a curved lever having its intermediate portion pivotally connected to the other arm and operative to rock upon the exterior of said arm, and a pin xed in one end part of said lever for engaging selected notches of the yoke for clamping the jaws on bearing caps of varying size.

WALTER A. STURM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 299,889 Whiting June 3, 1884 462,421 Wever Nov. 3, 1891 805,949 Facette Nov. 28, 1905 867,518 VMark Oct. l, 1907 1,118,532 kCrandall Nov. 24, 1914 1,525,894 Seppmann Feb. 10, 1925 1,656,242 Scott Jan. 17, 1928 1,852,863 Stark Apr. 5, 1932 2,121,715 Saenger June 21, 1938 2,156,186 Maki Apr. 25, 1939 FOREIGN PATENTS Number Country Date 10,737 Germany Aug. 21, 1880 

